MR. W. A. NICHOLSON ON BOTANY OF SUTTON. 283 
Liparis Loeselii, Rich. 
“ Occurs at Sutton associated with Hypnum cuspi- 
datum, L., H. scorpiodes, L. and H. giganteum, Schp.” 
Mr. W. H. Burrell. It has been usually recorded 
as accompanying Sphagnum. 
Listera ovata, R. Br. 
Orchis maculata, L. 
SCILLA FESTALIS, Salisb. 
J UNCUS BUFONIUS, L. 
Butomus umbellatus, L. 
The following xerophilous species occur, probably with 
others. 
Hypericum pulchrum, L. 
Ulex europaeus, L. 
Potentilla silvestris, Neck. 
Chrysanthemum Leucanthemum, L. 
Filago minima, Fr. 
Leontodon hispidus, L. 
Calluna Erica, D. C. 
Erica Tetralix, L. 
Erythr.ea Centaurium, Pers. 
Teucrium Scorodonia, L. 
Briza media, L. 
This grass indicates chalk in the soil.* 
The occurrence of these xerophilous species amongst the 
marsh-flora is a fact of some interest. Schimper’s view is that 
many xerophytic types can exist surrounded by excessive 
moisture in peaty soils, as the humic acids in the soil prevent 
the plants from absorbing more moisture than they require, 
that they are, in fact, living in a condition of “ physiological 
drought.” 
If the opinion I have already alluded to that there are no 
peaty acids in the marsh soil of Norfolk is correct, it is difficult 
to account for these types flourishing as they do, under 
conditions apparently foreign to their requirements, almost 
side by side with the characteristically marsh species. In 
VOL. VIII. 
0 ‘ Grasses,’ Marshall Ward, p. 32. 
U 
